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Method for adsorbing heavy metal ions by manganese ferrite nanoparticle and graphene compound

A technology of heavy metal ions and nanoparticles, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low stability, not wide enough range of use, and non-reusable use

Inactive Publication Date: 2014-04-16
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI +1
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Problems solved by technology

However, conventional non-metallic mineral adsorbents are limited by their low adsorption rate, low stability, and non-reusable shortcomings, and the actual usable range is not wide enough.

Method used

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  • Method for adsorbing heavy metal ions by manganese ferrite nanoparticle and graphene compound
  • Method for adsorbing heavy metal ions by manganese ferrite nanoparticle and graphene compound

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] 1. The purpose of the present invention is aimed at the application of a nano-adsorbent with good adsorption effect on heavy metal ions.

[0012] 2. The present invention not only makes full use of the unique electrical properties, mechanical properties, thermal properties, high specific surface area and high adsorption capacity of graphene oxide, but also grafts the thiol functional group of β-mercaptoethylamine (MEA) onto the adsorption material, and the obtained The heavy metal adsorbent has a good adsorption effect on heavy metal ions.

[0013] 3. At 25°C, pH ≈ 10, C 0 (Ni 2+ )=20mg / L, add manganese ferrite nanoparticles and graphene composite adsorbent (ratio to heavy metals is 1:400~600), after mixing for 20 hours, take the mixed solution, high-speed centrifugation and magnetic separation Then take the supernatant.

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Abstract

The invention discloses a method for adsorbing heavy metal ions by a manganese ferrite nanoparticle and graphene compound. The absorbing method comprises the following steps: under conditions of 25 DEG C, pH of about 10 and C0(Ni<2+>) of 20mg / L, adding a manganese ferrite nanoparticle and graphene compound adsorbent, wherein the mass ratio of the adsorbent to heavy metal containing wastewater is 1: (400-600); after mixing for 20 hours, taking mixed liquor, and carrying out high speed centrifugation and magnetic separation, and taking a supernatant liquid; and separating the adsorbent from the wastewater under a magnetic condition after the adsorbent fully contacts the heavy metal containing wastewater. The invention provides an application of the manganese ferrite nanoparticle and graphene compound. According to the method disclosed by the invention, the nano material is used as a heavy metal adsorbent, and the heavy metal absorbent has an excellent performance in heavy metal containing wastewater treatment.

Description

technical field [0001] The invention relates to the application of a heavy metal adsorbent. Background technique [0002] With the development of the economy, industrial water consumption has doubled, and the discharge of waste water has greatly increased. Industrial wastewater, especially surface treatment wastewater, involves various heavy metal ions. The water quality is complex and highly toxic. Some of them also contain highly toxic substances that are carcinogenic, teratogenic, and mutagenic, which seriously threaten the ecosystem and human health. It is extremely harmful. The pollution of heavy metal ions, especially trace amounts of heavy metal ions (such as mercury ions, lead ions, cadmium ions, arsenic ions), has attracted great attention. [0003] The traditional treatment methods for heavy metal ions in wastewater at home and abroad mainly include: ion exchange method, insoluble compound method, air flotation method, chemical sedimentation method and adsorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/62B01J20/20
Inventor 包健包志豪李晓冬何卿吴涛
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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